Requiem: Offertorium - Hostias

Recording by Wolfgang Amadeus Mozart.

Recording identifiers

ISRC
FR6V81286910
CopyrightID (CopyrightChains transaction hash)
0x8dd414b78ff0f508d3690c2429838f3533e85d9c1129f27e88b1ed2f55d4f8b3
Copyright registration time
2026-07-07T15:49:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T08:56:20Z
Bitcoin block
957145
Canonical record hash
sha256:af846c710e34797d2c51b1487bd8963f92674d2e3661d76fcdbee7a0afdb1cfa

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.